Description Double your charms order for free! Whatever quantity you purchase, we’ll automatically double it and ship the extras—no promo code needed. Order your recycled clear acrylic charms today and enjoy twice the value at no extra cost! 4mm thick holographic acrylic charms, available in two light-diffracting holographic effects, which add movement to your acrylic charms. Holographic charms are constructed from two layers of clear 2mm thick acrylic, giving an overall charm thickness of 4mm. The printed elements of your charms are sandwiched between the 2 sheets of acrylic for added durability, with the holographic effect visible on side A of your finished charm. The holographic material is transparent but can dull side A of your printed designs slightly when compared to side B. As such we always recommend using our single quantity option to purchase samples of your designs prior to placing a full order. This will allow you to check how the holographic finish looks against your artwork.